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EP0217191A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process for the separation of iodine and its compounds from carbonylation products obtained by the carbonylation of dimethyl ether, methyl acetate or methanol

Assignee: Hoechst AG
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Filing: 1986-09-10
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Granted: —
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Expires: 2006-09-10
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Abstract

Abstract Translated from German Beim Verfahren zur Abtrennung von Jod und dessen Verbindungen aus den bei der Carbonylierung von Dimethylether, Methylacetat oder Methanol in Gegenwart jodhaltiger Katalysatoren erhaltenen Carbonylierungsprodukten Essigsäure, Acetanhydrid oder Ethylidendiacetat behandelt man, zur Herabsetzung der Menge des die Carbonylierungsprodukte verunreinigenden Gesamtjods auf Gehalte unterhalb 20 ppb Jod, die Carbonylierungsprodukte bei Temperaturen von 20° bis 200°C mit Peressigsäure, Diacetylperoxid oder diese unter den Reaktionsbedingungen bildenden Verbindungen und trennt sie destillativ ab. In the process for separating iodine and its compounds from the carbonylation products obtained in the carbonylation of dimethyl ether, methyl acetate or methanol in the presence of iodine-containing catalysts, acetic acid, acetic anhydride or ethylidene diacetate is treated to reduce the amount of total iodine contaminating the carbonylation products to contents below 20 ppb iodine, the carbonylation products at temperatures from 20 ° to 200 ° C. with peracetic acid, diacetyl peroxide or these compounds forming the reaction conditions and separating them off by distillation.

Inventors

  • 👤 Heinz Dr. Erpenbach
  • 👤 Klaus Dr. Gehrmann
  • 👤 Peter Dr. Hörstermann

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 19:35
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/42; C07C51/487; C07C51/54; C07C51/573

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

DE2104828A1 Cited
DE2901359A1 Cited

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